Display housing for computing device

ABSTRACT

An improved housing for a computing device is disclosed. The improved housing can have one or more of the following aspects. A first aspect of the invention pertains to a computer housing having a logo or other symbol that can be illuminated using light from the backside of a display panel. A second aspect of the invention pertains to a suspended frame is able to support a display panel within a display housing. A third aspect of the invention pertains to a computing device provided with an internal antenna. A fourth aspect of the invention pertains to a stiffener for a computer housing so as to increase the rigidity and strength of the computer housing. A fifth aspect of the invention pertains to a housing having a logo, symbol or other device that can be illuminated using light from the backside of a display panel. A sixth aspect of the invention pertains to a lid for a computing device, such as a portable computer, that is provided with a translucent housing.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. patent application Ser. No.11/198,783 (Atty. Dkt. No. APL1P193D1) filed Aug. 4, 2005 and entitled“DISPLAY HOUSING FOR COMPUTING DEVICE,” which is a divisional of U.S.patent application Ser. No. 09/389,915 (Atty. Dkt. No. APL1P193, nowU.S. Pat. No. 6,977,808) filed Sep. 3, 1999 and entitled “DISPLAYHOUSING FOR COMPUTING DEVICE,” which claims priority to U.S. ProvisionalApplication No. 60/134,082 (Atty. Dkt. No. APL1P193P) filed May 14, 1999and entitled “DISPLAY HOUSING FOR COMPUTING DEVICE,” all of which arehereby incorporated by reference herein for all purposes.

This application is also related to U.S. application Ser. No. 60/134,084(Atty. Dkt. No. APL1P197P) filed May 14, 1999 and entitled “HOUSING FORA COMPUTER DEVICE,” which is hereby incorporated by reference herein.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates generally to computer system and, moreparticularly, to improved features for housings of computer systems.

2. Description of the Related Art

All computing devices, including portable computers and desktopcomputers, have housings that enclose the components and circuitry ofthe computing devices. Various design difficulties are presented asthese housing get more compact. These design difficulties areparticularly acute for portable computers where a lot of components arerequired to fit in small areas. The difficulties are increased when thehousings include complex shapes and decorative features.

Thus, there is a need for improved housings for computing devices.

SUMMARY OF THE INVENTION

Broadly speaking, the invention relates to an improved housing for acomputing device. The improved housing can have one or more of thefollowing aspects. A first aspect of the invention pertains to acomputer housing having a logo or other symbol that can be illuminatedusing light from the backside of a display panel. A second aspect of theinvention pertains to a suspended frame that is able to support adisplay panel within a display housing. A third aspect of the inventionpertains to a computing device provided with an internal antenna. Afourth aspect of the invention pertains to a stiffener for a computerhousing so as to increase the rigidity and strength of the computerhousing. A fifth aspect of the invention pertains to illumination ofdesign elements or features using light from the backside of a displaypanel. A sixth aspect of the invention pertains to a lid for a computingdevice, such as a portable computer, that is provided with a translucenthousing.

The invention can be implemented in numerous ways, including as anapparatus, a device, a method, and a computer system. Severalembodiments of the invention are discussed below.

As a display apparatus, one embodiment of the invention includes: alight panel that produces light for a display screen; a frame supportingsaid light panel with dimensional stability; a housing having said frameattached thereto, substantial portions of said housing beingtranslucent; and a cosmetic shield provided between said housing andsaid frame to mask said frame and said light panel from being visiblethrough the substantial portions of said housing being translucent.

As a display apparatus, another embodiment of the invention includes: ahousing, substantial portions of said housing being translucent; a lightpanel provided within said housing, said light panel produces light fora display screen; and a cosmetic shield provided between said housingand said light panel to mask said light panel from being visible throughthe substantial portions of said housing being translucent.

As a method for illuminating a predetermined design in a translucenthousing using reflected light, one embodiment of the invention includes:emitting light from a light panel in first and second directions;reflecting a portion of the light emitted in the second direction from acosmetic shield, the cosmetic shield being provided between the housingand the light panel; reflecting a portion of the light reflected fromthe cosmetic shield back towards the cosmetic shield using a reflectingsurface; and passing a portion of the reflected light from thereflecting surface through an opening in the cosmetic shield having thepredetermined design and then through a corresponding portion of thehousing adjacent the opening in the cosmetic shield, therebyilluminating the predetermined design in the translucent housing.

As a portable computer, one embodiment of the invention includes: ahinge; and a housing having a display portion and a base portion, thedisplay portion being attached to the base portion with said hinge,wherein the base portion includes at least a processor, and wherein thedisplay portion includes at least a flat panel display, an outer shell,and a frame supporting said flat panel display with respect to saidportable computer by way of said hinge.

As a display apparatus, one embodiment of the invention includes: a flatpanel display that emits light in a forward direction and in a backdirection when active; and an outer shell for providing a housing for atleast a rear portion of said display apparatus, said outer shellincluding a transparent portion through which a portion of the lightemitted by said flat panel display in the back direction is able topass, thereby illuminating the transparent portion when said flat paneldisplay is active.

As a housing for a computer device, one embodiment of the inventionincludes: a front shell; a back shell coupled to said front shell toproduce said housing, electrical components for the computer devicebeing internal to said housing; and a foam stiffener provided internalto said housing to substantially fill unused space internal to saidhousing, thereby providing stiffness to said housing.

As a stiffening system for providing distributed loading to a portablecomputer assembly, one embodiment of the invention includes: a computerhousing, said computer housing including a first member and a secondmember, said second member being coupled to said first member to form avolume therebetween and wherein said first member and said second memberwhen coupled together form said computer housing; a stiffener, saidstiffener being disposed between said first member and said secondmember of said computer housing, said stiffener being configured tosubstantially fill an unused portion of the volume between said firstmember and said second member wherein the outer surfaces of saidstiffener respectively conform to the inner surfaces of the first andsecond member.

As a computer system, one embodiment of the invention includes: anantenna, said antenna being configured to transmit or receive RFsignals; and a computer housing, said computer housing being configuredto enclose said antenna such that said antenna is entirely containedinternal to said computer housing and is operable while being internalto said computer housing without having to extend any portion of saidantenna outside said computer housing.

As an antenna device for transmitting and receiving RF for use by acomputer, one embodiment of the invention includes: an antenna cablehaving first and second conductors; an outer conductor, said outerconductor being operatively coupled to said second conductor of saidantenna cable; an inner conductor, said inner conductor beingoperatively coupled to said first conductor of said antenna cable; andan antenna housing, said antenna housing being disposed around the outerperiphery of said outer conductor and said inner conductor, and whereinsaid antenna housing maintains a fixed separation between said outerconductor and said antenna cable.

Other aspects and advantages of the invention will become apparent fromthe following detailed description, taken in conjunction with theaccompanying drawings illustrating by way of example the principles ofthe invention.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention, together with further advantages thereof, may best beunderstood by reference to the following description taken inconjunction with the accompanying drawings in which:

FIG. 1 is a perspective diagram of a portable computer;

FIG. 2 illustrates a display apparatus according to one embodiment ofthe invention;

FIG. 3A is a diagram of an EMI shield according to one embodiment of theinvention;

FIG. 3B is a diagram of a cosmetic shield according to one embodiment ofthe invention;

FIG. 4 is a diagram of a symbol illumination system according to oneembodiment of the invention;

FIG. 5 is a flow diagram of design illumination processing according toone embodiment of the invention;

FIG. 6A is a top view of a suspended frame according to one embodimentof the invention;

FIG. 6B is a right side view of the suspended frame;

FIG. 7 is a view of a partial housing assembly according to oneembodiment of the invention;

FIG. 8 is an internal view of a Liquid Crystal Display (LCD) displayhousing for a computer;

FIG. 9 is a diagram of an antenna according to one embodiment of theinvention;

FIGS. 10A and 10B are cross-sectional drawings of a antenna poleaccording to one suitable embodiment;

FIG. 11A is a cross-sectional diagram of a conventional computer housingexhibiting excessive amounts of flexibility;

FIG. 11B is a cross-sectional diagram of the computer housing thatincludes a series of ridges (or inserts);

FIG. 12 is a diagram of a computer housing according to one embodimentof the invention;

FIG. 13 is a broken perspective view of a LCD display screen housingaccording to one embodiment of the invention;

FIG. 14A is a cross-sectional diagram of a display apparatus accordingto one embodiment of the invention;

FIG. 14B is a cross-sectional diagram of a display apparatus accordingto one embodiment of the invention;

FIG. 14C is a cross-sectional diagram of a display apparatus accordingto one embodiment of the invention; and

FIG. 14D is a cross-sectional diagram of a display apparatus accordingto one embodiment of the invention.

DETAILED DESCRIPTION OF THE INVENTION

The invention pertains to an improved housing for a computing device.More particularly, a first aspect of the invention pertains to acomputer housing having a logo or other symbol that can be illuminatedusing light from the backside of a display panel. A second aspect of theinvention pertains to a suspended frame is able to support a displaypanel within a display housing. A third aspect of the invention pertainsto a computing device provided with an internal antenna. A fourth aspectof the invention pertains to a stiffener for a computer housing so as toincrease the rigidity and strength of the computer housing. A fifthaspect of the invention pertains to illumination of design elements orfeatures using light from the backside of a display panel. A sixthaspect of the invention pertains to a lid for a computing device, suchas a portable computer, that is provided with a translucent housing.

Embodiments of the invention are discussed below with reference to FIGS.1-14D. However, those skilled in the art will readily appreciate thatthe detailed description given herein with respect to these figures isfor explanatory purposes as the invention extends beyond these limitedembodiments.

FIG. 1 is a perspective diagram of a portable computer 100. The portablecomputer 100 includes a base 102 and a lid 104. The base 102 housesinternally various integrated circuit chips and other circuitry toprovide computing operations for the portable computer 100. Theintegrated circuit chips and other circuitry include a microprocessor,Read-Only Memory (ROM), Random-Access Memory (RAM), a disk drive, abattery, and various input/output (I/O) support circuitry. The base 102also includes a keyboard 106 that allows a user of the portable computer100 to enter alphanumeric data. The base 102 also includes a track pad108 and associated buttons 110 and 112. The track pad 108 is an inputdevice for the portable computer 100 and generally represents an inputpointer device. The associated buttons 110 and 112 allow a user to makea selection with respect to a graphical user interface. Additionally,the base 102 includes a power switch 114 and miscellaneous switches 116.

The lid 104 is coupled to the base 102 by way of a hinge mechanism (notshown). As such, the lid 104 can rotate into an open position or aclosed position with respect to the base 102. As illustrated in FIG. 1,the lid 104 is in the open position. The lid 104 contains a lightemitting diode (LCD) display 118. The LCD display 118 is visible to auser of the portable computer 100 when the lid 104 is in the openposition, such as illustrated in FIG. 1. The LCD display 118 issurrounded at a peripheral region by a bezel 120 that serves to supportthe LCD display 118 in its assembled position within the lid 104. Whenthe lid 104 is in a closed position, an outer surface 122 of the lid 104is visible but the LCD display 118 and the bezel 120 are no longervisible to the user.

According to a first aspect of the invention, a logo or other symbolprovided on a housing can be illuminated using light from the backsideof a LCD panel. The light can be direct, reflected, or both. Theillumination is provided by use of otherwise wasted light.

FIG. 2 illustrates a display apparatus 200 according to one embodimentof the invention. The display apparatus 200 illustrated in FIG. 2represents an assembly diagram for the display apparatus 200.

The display apparatus 200 includes a translucent housing 202. Thetranslucent housing 202 has an outer surface 204 and an inner surface206. In one implementation, the translucent housing 202 is a lid of aportable computer, such as the lid 104 illustrated in FIG. 1. A cosmeticshield 208 is placed against the inner surface 206 of the translucenthousing 202. The cosmetic shield 208 provides a uniform, clean look forthe translucent housing 202 when viewed from the outer surface 204. Inother words, the cosmetic shield 208 provides the uniform, clean lookand masks out the undesirable appearance of other internal components tothe display apparatus 200. A suspended frame 210 is connected to thetranslucent housing 202 at the inner surface 206. The suspended frame210 typically affixes itself with respect to the translucent housing 202at the periphery of the translucent housing 202. An EMI shield 212 canbe placed within the suspended frame 210 or between the suspended frame210 and the cosmetic shield 208. The EMI shield 212 is a metal sheethave a plurality of holes. A LCD panel 214 is affixed to the suspendedframe 210. Hence, the suspended frame 210 operates to secure theposition of the LCD panel 214 with respect to the translucent housing202. The EMI shield 212 serves to block emissions from at least theback-side of the LCD panel 214. A bezel 216 provides a border around theedge of the front-side of the LCD panel 214 and typically attaches to aperipheral region of the translucent housing 202.

FIG. 3A is a diagram of an EMI shield 300 according to one embodiment ofthe invention. The EMI shield 300 represents an embodiment of the EMIshield 212 illustrated in FIG. 2. The EMI shield 300 includes aplurality of holes 302 which are typically provided in a predeterminedpattern (e.g., grid pattern). Even though the EMI shield 300 includes aplurality of holes 302, when placed adjacent to one side of a LCD panel,the EMI shield is able to limit electromagnetic emissions from thedisplay apparatus due to the back-side of the LCD panel. The EMI shield300 also includes a solid region 304 through which there are no holes.In FIG. 3A, the solid region 304 is in the form of a symbol or a companylogo, such as an apple which is the company logo of Apple Computer, Inc.In general, the solid region 304 provides a reflection area that isutilized to provide symbol illumination as discussed in detail below.However, it should be noted that the solid region 304 need not have thesame shape or configuration as the symbol to be illuminated. Forexample, the solid region 304 illustrated in FIG. 3A could be a squareregion that is at least as large as the symbol to be illuminated.

FIG. 3B is a diagram of a cosmetic shield 306 according to oneembodiment of the invention. The cosmetic shield 306 can be formed froma variety of materials. For example, in one implementation, cosmeticshield 306 is a thin sheet of aluminum. Other suitable materials for thecosmetic shield 306 include, for example, paper or plastic. The cosmeticshield 306 can be any of a variety of different colors or multiplecolors. Although the cosmetic shield 306 generally reflects lightincident from the LCD panel, the cosmetic shield 306 also include anopening 308. The opening 308 corresponds to the symbol to beilluminated. The opening 308 provides an outlet for some of the lightbeing reflected from the solid region 304 of the EMI shield 300 towardsthe cosmetic shield 306. Accordingly, the light passing through theopening 308 illuminates the logo or other symbol.

FIG. 4 is a diagram of a symbol illumination system 400 according to oneembodiment of the invention. The symbol illumination system 400 operatesto illuminate a symbol at a translucent portion of a housing using lightprovided by a display panel. The symbol illumination system 400 explainshow a symbol is illuminated by a display apparatus, such as the displayapparatus 200 illustrated in FIG. 2, according to one embodiment of theinvention.

The symbol illumination system 400 includes a LCD panel 402. The LCDpanel 402 emits light in a primary direction 404 as well as in asecondary direction 406. The primary direction 404 is associated withthe direction towards a viewing side of the LCD panel 402. A user of theLCD panel 402 (or the computer to which the LCD panel 402 is associated)typically views a display screen from the viewing side of the LCD panel402. The secondary direction 406 represents light being emitted from theback-side of the LCD panel 402 towards the housing which supports theLCD panel 402. Generally, the second direction 406 is opposite theprimary direction. The light being emitted in the secondary direction406 then interacts with an EMI shield 408. The EMI shield 408 includes aplurality of holes through which light may pass. As an example, the EMIshield 408 can be constructed such as the EMI shield 300 illustrated inFIG. 3A. In any case, when the light emitted in the secondary direction406 strikes the EMI shield 408 at one of the respective holes within theEMI shield 408, then such light 412 can pass through the EMI shield 408.On the other hand, the light emitted in the secondary direction thatdoes not strike the EMI shield 408 at a hole (but instead a solidregion), such light 410 is reflected back toward the LCD panel 402.

The light 412 that does pass through the EMI shield 408 next impingesupon a cosmetic shield 414. The light 412 striking the cosmetic shield414 is reflected from the cosmetic shield 414 back towards the EMIshield 408 as reflected light 416. Thereafter, a portion of thereflected light 416 that reflects back to a solid region 417 (e.g.,solid region 304) of the EMI shield 408 is then again reflected backfrom the solid region 417 of the EMI shield 408 towards the cosmeticshield 414 as twice reflected light 418. At least a portion of the twicereflected light 418 is directed to an opening 420 in the cosmetic shield414. The portion of the twice reflected light passing through theopening 420 then passes through a translucent housing 422 to produce anilluminated image 424 at an outer surface of the translucent housing422. More particularly, the opening 420 within the cosmetic shield 414is configured in accordance with an image of the symbol to beilluminated. For example, when the opening 420 is formed such as theopening 308 in the cosmetic shield 306 illustrated in FIG. 3B, theilluminated image 424 at the outer surface of the translucent housing422 would correspond to an illuminated apple symbol. However, as notedabove, any graphic or symbol can be illuminated in this manner.

FIG. 5 is a flow diagram of design illumination processing 500 accordingto one embodiment of the invention. The design illumination processing500 is, for example, performed by a symbol illumination system, such asthe symbol illumination system 400 illustrated in FIG. 4. Typically, thesymbol illumination system would be provided on an electronic devicehaving a display panel for displaying information to a user. The designillumination processing 500 enables a design (e.g., symbol, logo orother graphic) on a back surface of a housing for the display panel ofthe electronic device to be illuminated using reflected light from thelight panel.

The design illumination processing 500 begins by emitting 502 light froma light panel in first and second directions. Typically, the firstdirection is a primary direction in which light is emitted from thelight panel, and the second direction is a secondary in which light isalso emitted. Typically, the amount of light emitted in the seconddirection is substantially less than the amount of light emitted in thefirst direction. Often, the light emitted in the second direction is aside-effect not normally desired (i.e., a side-effect) but such light isutilized by the invention.

Next, a portion of the light emitted in the second direction from thelight panel is reflected 504 from a cosmetic shield. In other words, thelight emitted in the second direction is reflected back in substantiallythe first direction by the cosmetic shield. Typically, the cosmeticshield reflects most of the light striking its surface, but some of thelight can also be absorbed.

Then, a portion of the light reflected from the cosmetic shield isreflected 506 back towards the cosmetic shield using a reflectingsurface. The reflecting surface can be provided in a number of ways,including as a reflecting material provided on a portion of a backsurface of the light panel or an intermediate reflecting region providedbetween the cosmetic shield and the back surface of light panel.Examples of an intermediate reflecting region are the solid region 304of the EMI shield 300 in FIG. 3A or the solid region 417 of the EMIshield 408 illustrated in FIG. 4.

Thereafter, a portion of the reflected light from the reflecting surfaceis passed 508 through an opening in the cosmetic shield having apredetermined design and then through a corresponding portion of anadjacent housing. In other words, light reflected from the cosmeticshield back to the reflecting surface then back again towards thecosmetic shield will eventually have a portion thereof pass through theopening in the cosmetic shield. The opening in the cosmetic shield leadsto a housing that is adjacent to the cosmetic shield. Also, at least aportion of the housing adjacent the cosmetic shield is translucent.Consequently, the light passing through the opening in the cosmeticshield also then passes through a corresponding portion of the(translucent) housing that is adjacent to the opening in the cosmeticshield, thereby illuminating the predetermined design in the housing.Once the design is illuminated, the design illumination processing 500is then complete and ends.

The design being illuminated is located adjacent the opening in thecosmetic shield. As noted above, the design can be provided in thetranslucent portion of the housing adjacent the opening in the cosmeticshield. The design could also be provided by a separate design piece oftranslucent material that is inserted and affixed within an opening inthe (translucent or non-translucent) housing. In such case, the openingin the housing would be adjacent the opening in the cosmetic shield.Still further, a light pipe or light guide could direct the light to thedesign and thus not be adjacent the opening in the cosmetic shield.

According to a second aspect of the invention, a suspended frame is ableto support a LCD panel within a display housing with attachments beingmade at upper and lower peripheral surfaces. The suspended frame isparticularly well suited for use with a translucent display housing.

FIG. 6A is a top view of a suspended frame 600 according to oneembodiment of the invention. FIG. 6B is a right side view of thesuspended frame 600. The suspended frame 600 illustrated in FIG. 6A andFIG. 6B represents one embodiment for the suspended frame 210illustrated in FIG. 2.

The suspended frame 600 includes an outer periphery 602 and an innerperiphery 604 that form the frame. However, the suspended frame 600could alternatively be a sheet which would provider greater support atthe additional manufacturing cost and additional weight. Typically, thesuspended frame 600 is a metal structure, such as sheet metal. Thesuspended frame 600 is used to support a LCD panel, such as the LCDpanel 214 illustrated in FIG. 2. The suspended frame 600 includes a leftside 606, a right side 608, a top side 610, and a bottom side 612. Theleft side 606 and the right side 608 have side edges 614 that extendoutward at the outer periphery 602 of the left side 606 and the rightside 608. Additionally, the bottom side 612 includes a bottom edge 616that extends outward at the outer periphery 602 of the bottom side 612.In order to affix the LCD panel to the suspended frame 600, thesuspended frame 600 includes holes 618 at the left side 606 and theright side 608. The top side 610 includes holes 620 and the bottom edge616 includes holes 622. The holes 620 and 622 are used to affix or mountwith respect to the suspended frame 600 as discussed below.

The suspended frame 600 then in turn mounts to a housing. For example,the housing can be the translucent housing (lid) 202 illustrated in FIG.2. FIG. 7 is a view of a partial housing assembly 700 according to oneembodiment of the invention. The partial housing assembly 700illustrates the suspended frame 600 being affixed or attached to ahousing 702. The housing 702 includes an inner surface 704 and an outersurface 705. At the periphery of the inner surface 704, an outer lip 706is formed. The outer lip 706 typically extends around the periphery ofthe translucent housing 702. At a bottom side of the outer lip 706 aplurality of holes 708 are provided through the outer lip 706. The holes708 through the bottom side of the outer lip 706 align with the holes622 in the bottom edge 616 of the bottom side 612 of the suspended frame600. By threading screws through the holes 708 and into thecorresponding holes 622, the bottom side of the suspended frame 600 isaffixed to the bottom side of the housing 702. The housing 702 alsoincludes the plurality of tabs 710 at a top side of the housing 702. Inone embodiment, the tabs 710 are constructed as part of the housing 702and extend downward from the top side over the top side 610 of thesuspended frame 600. The tabs 710 are used to affix or mount the topside 610 of the suspended frame 600 to the top side of the housing 702.Typically, screws would be threaded through openings 712 in the tabs 710and through the corresponding holes 620 in the top side 610 of thesuspended frame 600. It should be noted that in this embodiment, thesuspended frame 600 is coupled to the housing 702 only at the top sideand at the bottom side near the periphery. As such, when the housing 702is translucent, the outer surface 705 of the translucent housingprovides a smooth, uniform appearance (without having visual detractionsdue to large numbers of screws, etc.) even though the suspended frame600, as well as the LCD panel coupled thereto, are securely fastened tothe translucent housing.

Still further, the suspended frame 600 is connected to a base housing(e.g., base 102 of FIG. 1) through a hinge mechanism (not shown). Thehousing 702 then, as noted above, attaches to the suspended frame 600.The LCD display (e.g., 214) attaches to the suspended frame 600. A bezel(e.g., bezel 120) couples to the housing 702 or the suspended frame 600.Hence, when the lid (e.g., lid 104) is assembled, the bezel and thehousing sandwiches the suspended frame 600 and the LCD display. Anotheradvantage of the suspended frame 600 is then that the functionalcomponents within the lid are able to be easily serviced, tested orassembled because the bezel and housing can be removed while leaving theLCD display operable and attached to the suspended frame 600 (as well asthe hinge mechanism).

According to a third aspect of the invention, a portable computingdevice is provided with an internal antenna. In one embodiment, theantenna is internal to a computer housing (e.g., LCD display housing).

FIG. 8 is an internal view of a LCD display housing 800 for a computer.The LCD display housing 800 has a housing 802. The housing 802 has anouter surface 804 and an inner surface 806. Affixed to the inner surfaceof the housing 802 is a LCD display 808. The peripheral portion of theLCD display 808 and brackets used to affix the LCD display 808 to theinner surface 806 of the housing 802 can be cosmetically masked with acosmetic frame 810. In one implementation, the cosmetic frame 810 is athin sheet of aluminum. The cosmetic frame 810 is useful when thehousing has translucent portions.

The housing 802 is also configured to enclose an antenna. The innersurface 806 of the housing 802 is also provided with recesses 812 and813 for receiving the antenna. In one implementation, the recesses 812and 813 are configured to coincide with the shape of the antenna deviceso that the assembly of the antenna device to the inner surface 806 ofthe housing 802 is performed with ease (and likely without any need tootherwise adhere or fasten). In most instances, the antenna device isdisposed at the outer perimeter of the inner surface 806 of the housing802. For RF interference reasons, it is desirable to place the antennaas far away from metal surfaces within the housing 802, namely, the LCDdisplay 808 and the brackets used to affix the LCD display 808 to theinner surface of the housing 802. Also, when the cosmetic shield 810 isprovided and made of metal, it is also desirable to place the antenna asfar from the cosmetic shield as practicable. Given the space constraintsof the LCD display housing 800, the housing 802 generally conforms tothe shape and size of the LCD display 808. However, to provide aseparation gap 814, the housing 802 is provided with sufficient area onsides 816 and 818. The recesses 810 are thus provided on the sides 816and 818 spaced the separation gap 814 from the nearest interfering metalsurfaces. In one implementation, the separation gap 814 is 12 mm, butsuch separation is dependent on the mass of metal in the LED displayhousing.

FIG. 9 is a diagram of an antenna 900 according to one embodiment of theinvention. The antenna 900 has a first antenna pole 902 and a secondantenna pole 904. Both the first antenna pole 902 and the second antennapole 904 are connected to antenna cables 906 and 908. When the antenna900 is attached to the housing 802, the first antenna pole 902 fits intothe recess 812 and the second antenna pole 904 fits into the recess 813.The antenna cable 908 couples the first and second antenna poles 902 and904 together. When the antenna 900 is attached to the housing 802, theantenna cable 908 fits into a groove 820 in an upper peripheral portionof the inner surface 806 of the housing 802 (see FIG. 8). The antennacable 906 is provided between the LCD display 808 and the inner surface806 of the housing 802 and serves to electrically couple the antenna 900to the computing device.

Although not shown in FIGS. 8 and 9, after the antenna 900 is attachedto the housing 802, a bezel (not shown) is then attached to the housing802 to provide a front surface to the housing 802. The attachment of thebezel serves to complete the assembly of the housing 802. The attachmentof the bezel can be facilitated by snaps 822 and 824 provided on thesides 816 and 818 respectively. In one implementation, the bezel istranslucent and covers the cosmetic shield 810 as well as the moreperipheral portions of the housing 802. In such an implementation, theantenna 900 together with the recesses 812 and 813, the groove 820 andthe snaps 824 all provide a generally uniform design line within thehousing. As such, even when the housing (at least the peripheralportion) is translucent, the antenna is largely unnoticeable to theuntrained observer from the exterior of the housing.

While the above embodiments refer to the use of a dipole antenna, amonopole antenna or other antenna designs could also be used. While therecesses and grooves in the inner surface of the housing serves toprovide uniform design features in a translucent housing, if anon-translucent housing were used, such recesses and grooves would notbe as important. It should also be noted that to provide a sufficientseparation gap 814, the sides 816 and 818 could be extended outwardprimarily only in the vicinity of the recesses 812 and 813 as opposed tothe entire length of the sides 816 and 818.

The one or more antenna poles provided with the antenna can be formed ina variety of ways. FIGS. 10A and 10B are cross-sectional drawings of aantenna pole 1010 according to one suitable embodiment. The antenna pole1010 couples to a cable 1012 (e.g., coaxial cable) that has an innerconductor and an outer conductor (not shown). A dielectric material (notshown) is disposed between the inner conductor and the outer conductor.The antenna pole 1010 is used to transmit and receive information withrespect to a computing device associated with the antenna pole 1010.Typically, the cable has a distal end coupled to a portion of theantenna pole 1010 and a proximal end coupled to a circuit board orrelated device (e.g., transceiver) of the computing device. In oneimplementation, the cable 1012 is a coaxial cable. However, in general,the cable 1012 can be any suitable wiring having two conductors.

In the embodiment shown in FIGS. 10A and 10B, the antenna pole 1010includes a first conductor 1014 that is operatively coupled to the outerconductor at the distal end of cable 1012. The first conductor 1014flares back around the outer peripheral surface of the cable 1012. Inthis manner, a substantial portion of first conductor 1014 is disposedaround the outer periphery of the cable 1012. In some situations, a gap1016 is formed between the inner peripheral surface of the firstconductor 1014 and the outer peripheral surface of the cable 1012 (asshown in the cross section C-C of FIG. 10B). In one implementation, thefirst conductor 1014 flares back about 23 mm in length, and the gap 1016is 0.3 to 0.4 mm. Typically, the first conductor 1014 is formed from aconductive metal (e.g., copper). Also, as shown in FIGS. 10A and 10B,the first conductor 1014 may be configured in two separate sections thatare both flared back on opposite sides of the outer periphery of thecable 1012.

The antenna pole 1010 also includes a second conductor 1018 that isoperatively coupled to the inner conductor at the distal end of thecable 1012. The second conductor 1018 extends outward away from thedistal end of the inner conductor of the cable 1012. In oneimplementation, the second conductor 1018 is preferably about 23 mm fromthe distal end of the inner conductor 1018. Typically, the secondconductor 1018 is formed from a conductive metal (e.g., copper). Itshould be noted that the first conductor 1014 and the second conductor1018 may be integrally formed with the respective conductors of thecable 1010. In other words, the first conductor 1014 could be a portionof the outer conductor of the cable 1012, and the second conductor 1018could be a portion of the inner conductor of the cable 1012.

The antenna pole 1010 has an antenna housing 1020 that is disposedaround the first conductor 1014, the second conductor 1018, and aportion of the cable 1012. The antenna housing 1020 can be formed from awide range of materials. By way of example, the antenna housing 1020 canbe made of polycarbonate. In one implementation, the outer peripheralsurface of first conductor 1014 is adjacent to the inner peripheralsurface of the antenna housing 1020. Additionally, in one embodiment,there can be a space 1022 between the inner peripheral surface of theantenna housing 1020 and the outer peripheral surface of secondconductor 1018. In such an embodiment having the space 1022, the antennahousing 1020 can also include a second conductor support member 1024 tosupport the second conductor (as shown in cross section D-D of FIG.10B).

The antenna housing 1020 further includes a plurality of support members1026 for supporting the cable 1012 line inside the antenna housing (asshown in cross section B-B of FIG. 10B). The supporting members 1026 canbe separate pieces or integrally formed with the antenna housing 1020.

The antenna housing 1020 can be formed as a two-piece construction,including a first housing member 1028 and a second housing member 1030.In this case, the supporting members 1026 can be integrally formed withthe first and second housing members 1028 and 1030. As shown, at thecross section B-B of FIG. 10B, the supporting members 1026 not onlysupport the cable 1012 inside the antenna housing 1020 but also properlyspace the conductors 1014 apart from the cable 1020. With the two-piececonstruction, a first mating portion 1032 of the first housing member1028 and a second mating portion 1034 of the second housing member 1030are structurally coupled and held together with shrink tubing 1036 thatsurrounds a portion of the outer peripheral surface of the antennahousing 1020 (see cross section A-A of FIG. 10B).

There is an increasing trend in the computer industry, particular withrespect to portable computers, to reduce size, weight and thickness. Forthe most part, any computer part that can be made smaller generally ismade smaller to accommodate this need. By way of example, the wallthickness of the computer housing has been made thinner over the years.In most instances, decreased wall thickness reduces the overallthickness and weight of the computer, both of which are desired to makea portable computer more portable.

However, making the outer structure thinner to reduce computer weightand thickness has its drawbacks, typically the enclosure becomes moreflexible. As a general rule, thicker walls mean stronger walls.Consequently, the thinner outer structure may not offer enough supportto protect the internal components of the computer. Even when thethinner outer structure is strong enough to protect the internalcomponents, users who expect rigid structures are unsatisfied.

Furthermore, recently, computer housing designs have become moredecorative, thereby creating more complex shapes. These complex designscreate structural problems that often result in even more flexible outershells. Typically the complex shapes are contoured or curvilinear, whichgenerally reduces the overall strength of the computer housing. Thecomplex shapes also make it increasingly difficult to provide anyinternal support to offset these problems. For the most part,rectilinear designs, which include most of the computer housings on themarket today, are stronger. The rectilinear design provides rigidsupport and is fairly easy to support with internal support members.

FIG. 11A is a cross-sectional diagram of a conventional computer housing1110 exhibiting excessive amounts of flexibility. The computer housing1110 includes a top member 1112 and a bottom member 1114. Typically, thetop member 1112 is structurally coupled to bottom member 1114 wherein anopen space or volume 1116 is created therebetween. For the most part,this volume contains the different parts or components of a computer ordisplay (e.g., circuit boards, key boards, display screen, etc.).Although, there are things contained in the volume, a significantportion of the volume is left unused. If a flexible (non-rigid) materialis used to form the top member or bottom member, then the volume will beleft structurally unsupported. By way of example, when a force 1118 issupplied to the computer housing 1110 (i.e., outer shell) at a positionaway from its members sides, the computer housing 1110 will deform underthe force 1118, creating a “feel” (“squishy feel”) which is consideredby users indicative of low quality. As a result of the deforming, theforce 1118 can also damage the internal parts or components of thecomputer or display (e.g., display screen).

In general, there are two ways to design a housing structure, one is tohave a strong outer shell, the other is to have an internal skeletonstructure. As a general rule, when the outer shell becomes increasinglythin (i.e., flexible) it is difficult to have a strong outer shell andtherefore an internal support skeleton is usually provided to strengthenthe thin outer shell. By way of example, ribs or inserts are typicallyused to increase the strength and rigidity of the outer shell.

FIG. 11B is a cross-sectional diagram of the computer housing 1110 thatincludes a series of ridges 20 (or inserts). Typically, the ridges 20provides support to both the bottom member 1114 and the top member 1112of the computer housing 1110. The ridges may be configured as part ofone of the members 1112, 1114 or may act as a separate piece. Although,the computer housing 1110 (outer shell) is better supported and has morerigidity, the volume 1116 created by the top member 1112 and the bottommember 1114 still includes unused space. Hence, if force 1122 is appliedto the surface of the top member 1112, then the unsupported space willdeform (i.e., flexible), albeit less than without the ribs 1120. Ifforce 1124 is applied to the surface of the top member 1112 at the rib1120, then the surface on the opposing side of the rib 1120 receives alarge portion of the force 1124 which may damage sensitive parts. Forexample, if the bottom member 1114 were a LCD display screen, then therib 1120 may transfer the full force of the force 1124 to the LCDdisplay screen, which may damage the LCD display screen.

According to a fourth aspect of the invention, a computer housing with astiffener is provided. The stiffener is configured to increase therigidity and strength of the computer housing, which advantageouslyallows the thickness of the computer housing walls to be decreased.Thus, the use of the stiffener not only protects internal components butalso provides a firmer feel to the housing. The stiffener can have alarge surface area and be positioned between the top member and thebottom member of a housing to distribute external loads (e.g.,pressures, forces) more evenly across the entire housing. Morespecifically, the stiffener can be configured to conform to the internalfeatures of the housing that oppose (or are adjacent to) the stiffener,thereby maximizing the load distribution. That is, the stiffeneradvantageously fills the unused volume of the housing. Furthermore, thestiffener is configured to work in housings that have complex shapes(e.g., curvilinear) thereby allowing more decorative housings.

Accordingly, the stiffener provides a non-traditional solution to a loaddistribution problem. Typically, the computer industry has always usedribs, inserts, a thick outer shell and/or rectilinear shapes to supportthe computer housing. For the most part, the computer industry has notfilled unused volumes within the computer housing because of theadditional weight.

FIG. 12 is a diagram of a computer housing 1210 according to oneembodiment of the invention. The computer housing 1210 represents ahousing used with a computing device such as a computer housing orcabinet or a display housing. The computer housing 1210 includes a firstmember 1212 and a second member 1214. Typically, the walls of eachmember 1212 and 1214 are thin and flexible. As mentioned above, the thinmembers 1212 and 1214 reduce the overall thickness and weight of thehousing. The computer housing walls are typically formed from a plasticmaterial such as polycarbonate (ABS). Normally, the first member 1212 isstructurally coupled to the second member 1214 to form the outer shellof the housing 1210 and form a volume therein. Although the computerhousing has been described as having a first and second members itshould be noted that the computer housing may be integrally formed(e.g., one piece) or formed from a plurality of members (i.e., thirdmember, fourth member, etc.).

Conventionally, the internal components or parts of the computer (e.g.,printed circuit boards, LCD displays) are housed within the volumecreated within the housing 1210. However, in most situations, thereremains a portion of the volume that is left unused (e.g., a void oropen space). A stiffener 1226 is disposed within the housing 1210 tosubstantially fill any unused volume between the first and secondmembers. Basically, the stiffener 1226 is configured to fill the unusedvolume (see FIG. 12). Moreover, the outer peripheral surface of thestiffener 1226 conforms to the shape of the adjacent components or innerperipheral surfaces of the first member and second member. The stiffener1226 can be configured to provide clearance (or slots) for features suchas connectors and wires. The stiffener 1226 can also include holes oropenings (cavities) for internal components or parts. Additionally, thestiffener 1226 may include protrusions and depressions that coincidewith the shape (geometry) of the components, parts or housing within thevolume.

Because the stiffener 1226 fills the unused volume of the housing,forces that exerted on the outer peripheral surface of the housing aredistributed over a larger surface area. Basically, if force 1228 isapplied to the external surface of first member 1212, the single pointof contact will be distributed throughout the stiffener 1226. Inessence, the combination of the first member 1212, second member 1214,internal components and stiffener 1226 form a laminate structure thatprovides resistance to point pressure loading.

Furthermore, the stiffener 1226 may be fastened to at least one of themembers or be tightly disposed between the members and components. Inone implementation, the stiffener 1226 is fastened to the first member1212 using a stiffener lip (not shown). Basically, the lip can be anextension of the first member and is configured to hold the stiffener1226 in place. The lip may also be used as a locating ridge fordetermining the correct placement of the stiffener 1226 with respect tothe first member. In another implementation, the stiffener 1226 may bestructurally coupled to the first member or the second member using anadhesive. It still other implementations, other techniques can be usedto hold the stiffener 1226 in place (e.g., screws, rivets, etc.).

Generally, the stiffener 1226 does not completely or overly fill theunused volume. Instead, a gap is provided so that the stiffener will notexert unwanted pressure on the surface of one of the components or themembers while in a static condition. By way of example, if the firstmember is an LCD display screen, the static pressure exerted on the backside of the LCD display screen may damage the LCD display screen.

In one embodiment, the stiffener 1226 should be formed from a materialthat can substantially be implemented in a portable computer environment(low flammability, low static charge, low weight, and lowcompressibility). In a preferred embodiment of this invention, thestiffener is formed from foam. Advantageously, many foam materials fallwithin the above criteria, especially the weight. The foam may bemachined, molded, or die cut to the desired shape. Preferably, packagingfoam is used. As examples, the stiffener can be formed frompolyurethane, expanded polystyrene, expanded polypropylene or expandedpolyethylene. All of these examples are light weight, have compressiblestrength (substantially rigid) and are easily formed to differentshapes. In any case, it should also be noted that the above descriptionis not limiting and any material that is substantially rigid andlightweight (e.g., rubber, plastic, silicon) may be used.

In another embodiment of the invention, lightweight stiffening isprovided for a portable computer housing. In this particular embodiment,the computer housing is a LCD display screen housing. FIG. 13 is abroken perspective view of a LCD display screen housing 1310 accordingto one embodiment of the invention. The LCD display screen housing 1310includes a bezel (frame) 1312 and an LCD display screen 1314 that form afront portion of the LCD display housing 1310. The LCD display screenhousing 1310 further includes a back portion 1316 of the LCD displayscreen housing 1310. The back portion 1316 provides an impact resistantshell for protecting the backside of the LCD display screen 1314. Asshown, both the bezel 1312 and the LCD display screen housing 1310 havecomplex shapes (internal and external) as well as portions that arecurvilinear (e.g., decorative design).

A foam stiffener 18 is disposed between the front portion and the backportion 1316 of the LCD display screen housing 1316. Additionally, theouter peripheral surfaces of the foam stiffener 1318 are configured toconform the inner peripheral surfaces of the front portion (e.g., theLCD display screen 1314 and perhaps the bezel 1312) and the back portion1316 of the LCD display screen housing 1316. Furthermore, the foamstiffener 1318 can also include a depression 1320 for disposing aconnector and a protrusion 1322 that fits into the backside of LCDdisplay screen 1314, and an opening 1324 for lighting a portion of theLCD display screen housing 1316. As shown, the foam stiffener 1318 isadvantageously configured to fill the complex shapes associated with thebezel 1312, the LCD display screen 1314, the LCD display screen housing1316 and connectors. It should be noted that the foam stiffener 1318 isnot limited by any one of the above arrangements (e.g., depressions,protrusions, openings) and any combination thereof may be used.Moreover, all three structures (e.g., the front portion, the foamstiffener 1318 and the back portion 1316) form a laminate structure(when coupled together) for the LCD display screen housing 1310 thatprovides a rigid structure with a firm feel (not malleable or squishy)that is substantially resistant to point pressures.

In an alternate embodiment, the foam stiffener can be used as the entirecomputer housing and fabricated to fit all the parts and the componentsof the computer. To protect the outer peripheral surface of the foam, acoating can be applied over the outer surfaces to form a shell.

Although the foam stiffener 1318 has a one-piece construction, the foamstiffener 1318 can utilize multiple pieces. In another alternateembodiment, the foam may be injected into the housing to fill the unusedvolume between the front portion and the back portion.

In other embodiments, the foam stiffener can incorporate an antenna oran EMI shield. That is, an antenna or an EMI shield could be patternedonto or internal to the foam stiffener. In one implementation, the foamstiffener is primarily a foam as noted above but also could includecopper and nickel to provide the antenna or the EMI shield.

Also, the foam stiffener is generally very light weight. Nevertheless tofurther reduce weight, the foam stiffener can include weight reducingapertures. These apertures (cavities or holes) are selected so as toreduce weight while maintaining rigidity. Such apertures may bepatterned or randomly placed.

Furthermore, the foam stiffener provides for a firm feel to the computerhousing assembly, which is particularly useful given the flexible natureof the increasingly thin-walled plastic products and the constraints oftypical stiffening methods such as ribs or inserts. Increasingly thinnerproducts means there is little room for ribs, while weight reductionefforts mean that traditional stiffening materials such as aluminum ormica are too heavy. The foam stiffener is very lightweight and can alsobe used to replace other functional and structural parts (sheet metal,plastics, etc.) and thus reduce cost, weight and parts count. Therelatively soft nature of the foam stiffener acts as a load spreaderwhich not only reduces likelihood of damaging parts or componentsinternal to the housing, but also increases the units ability to survivepoint source pressures on the housing. In fact, in a ball pressure testfor a portable computer, the display screen apparatus 1310 according tothe invention passed the test, while a display screen apparatus withoutthe benefits of the invention failed the test.

According to a fifth aspect of the invention, a logo, symbol or otherdevice provided on a housing can be illuminated using light from thebackside of a LCD panel. The light can be direct, reflected, or both.The illumination is provided by use of otherwise wasted light. Thefourth aspect is similar to the first aspect but relies less onreflected light and is perhaps better suited for a non-translucenthousing.

FIG. 14A is a cross-sectional diagram of a display apparatus 1400according to one embodiment of the invention. The display apparatus 1400includes a display housing 1400 that contains a LCD display 1404. TheLCD display 1404 has a front surface 1406 and a back surface 1408. Whenthe LCD display 1404 is power-on, the LCD display 1404 emits lightprimarily from the front surface 1406 but also emits some light from theback surface 1408. The fifth aspect of the invention serves to make useof the light emitted from the back surface 1408 that would otherwise gounused and thus wasted. The display apparatus 1400 also includes a bezel1410 and 1412 to frame out the front surface 1406 of the LCD display1404 and provide a smooth, uniform front surface for the display housing1402.

The display housing 1402 also includes a translucent portion 1414through which the light from the back surface 1408 of the LCD display1406 can pass so as illuminate the translucent portion. In oneembodiment, the display housing 1402 is generally opaque but includesthe translucent portion 1414 where the light is desired. For example, asymbol, logo or other device can be provided at the translucent portion1414 to be illuminated when the LCD display 1406 is powered-on. Thetranslucent portion 1414 can be formed into the display housing 1402.Alternatively, an opening or hole can be provided in the display housing1402 and a translucent plug or insert can be provided in the opening orhole.

Thus, the fifth aspect of the invention allow for the illumination ofdesign elements or features. The fifth aspect of the invention alsoserves to provide a visual indication of whether the LCD panel is on.When a computer system utilizing the display apparatus 1400 enters asleep mode, the LCD panel is typically power-off so that light is notemitted from the LCD display 1406 and thus the illumination of thedesign element or feature stops. A user is thereby informed that thecomputer system is in the sleep mode when there is no illumination ofthe design element or feature. Another advantage of the fifth aspect isthat it requires very little space between the back surface 1408 and theinside surface of the display housing 1402. Still another advantage ofthe invention is that the illumination is provided without requiring anyadditional power because the light used is otherwise wasted.

The display housing 1400 shown in FIG. 14A has a curved cross-sectionfor industrial design considerations, namely for better user appeal.However, the display housing 1400 can take a variety of different forms.

FIG. 14B is a cross-sectional diagram of a display apparatus 1420according to one embodiment of the invention. Although the displayapparatus 1420 is similar to the display apparatus 1400 of FIG. 14A, thedisplay apparatus 1420 includes a light diffuser 1422. As shown in FIG.14B, the light diffuser 1422 is provided on an inner surface of thedisplay housing 1402 at the translucent portion 1414. More generally,the light diffuser 1422 can be provided any where between the back side1408 of the LCD display 1404 and the outer surface of the housingdisplay 1402 at the translucent portion 1414.

The light diffuser 1422 operates to enable control of intensity andcolor of the illumination at the translucent portion 1414. In oneembodiment, the light diffuser 1422 is a label. The light diffuser 1422can have a graphic printed thereon, can have multiple colors, and canuse varying thickness all to assist with the control over the intensityand color of the illumination provided. For example, the material forthe light diffuser 1422 can be general label stock, Mylar, Lexan (fromGeneral Electric) or any other material that is thin and translucent.Particular graphics or color shades can be printed on the light diffuser1422 if desired.

The ability to control the light intensity of the illumination is usefulto normalize the illumination yielded by difference vendors of the LCDdisplays. For example, in a LCD display from a first vendor emits lightat a first intensity from its back surface and a LCD display from asecond vendor emits light at a second intensity (which is greater thanthe first intensity) from its back side, then the illuminated logo,symbol or device would appear brighter in the display housing using theLCD display from the second vendor. Hence, the light diffuser 1422 canbe used to normalize the intensity of the illumination provided. Forexample, the thickness of the light diffuser 1422 (label) used with thedisplay housing using the LCD display from the second vendor can beincreased (as compared to the thickness used with the display housingusing the LCD display from the first vendor) to thus reduce itstranslucency.

FIG. 14C is a cross-sectional diagram of a display apparatus 1440according to one embodiment of the invention. Although the displayapparatus 1440 is similar to the display apparatus 1420 of FIG. 14B, thedisplay apparatus 1440 further includes an illuminated area 1442 in thebezel 1412 and a light guide 1444. As shown in FIG. 14B, the light guide1444 has a first end 1446 that receives a portion of the light emittedfrom the back surface 1048 of the LCD display 1404. The light receivedby the first end 1446 is then directed through the light guide 1444 andoutput at a second end 1448. The second ends 1448 is coupled to theilluminated area 1442 so that the light directed through the light guide1444 is coupled to the illuminated area 1442, thereby illuminating theilluminated area 1442.

FIG. 14D is a cross-sectional diagram of a display apparatus 1460according to one embodiment of the invention. Although the displayapparatus 1460 is similar to the display apparatus 1420 of FIG. 14B, thedisplay apparatus 1460 further includes a foam insert 1462 to stiffenthe display apparatus 1460. The foam insert 1462 conforms to the spacebetween the back surface 1408 of the LCD display 1404 and the innersurface of the display housing 1402. In one embodiment, the foam insert1462 is a piece of foam such as discussed above with respect to thefourth aspect of the invention. As shown in FIG. 14D, to permit aportion of the light emitted from the back surface 1408 from reachingthe light diffuser 1422 as well as the translucent portion 1414, thefoam insert 1462 includes an opening 1464. The opening 1464 provides alight path from the back surface 1408 of the LCD display 1408 and thetranslucent portion 1414 of the display housing 1402.

According to a sixth aspect of the invention, a lid for a computingdevice, such as a portable computer, is provided with a translucenthousing yet offers an appealing aesthetic look without being hampered bycomponents internal to the housing. Aesthetic appearance can be improvedby using cosmetic shields. Translucent housings and cosmetic shieldshave been described above.

1. A portable computing device, comprising: a housing that forms asubstantially enclosed cavity within which various functional electroniccomponents of the portable computing device are positioned, theelectronic components having a total volume that is substantially lessthan the volume of the cavity such that the cavity includes an unusedvoid around the electronic components; and a stiffener disposed withinand substantially filling the void, the stiffener increasing thestrength and rigidity of the housing by distributing external loads moreevenly across the housing.
 2. The portable computing device as recitedin claim 1, wherein the housing includes a front cover and a back coverand wherein the stiffener is positioned between the front cover and theback cover.
 3. The portable computing device as recited in claim 2,wherein various function electronic components are connected with thefront cover.
 4. The portable electronic device as recited in claim 1,wherein the housing includes at least a first member and a second memberthat when structurally coupled together form a significant portion ofthe housing and surround functional electronic components of theportable computing device.
 5. The portable computing device as recitedin claim 1, wherein the stiffener is formed of foam.
 6. The portablecomputing device as recited in claim 5, wherein the foam is packagingfoam.
 7. The portable computing device as recited in claim 5, whereinthe foam is formed from a material selected from the group consistingessentially of: polyurethane, expanded polystyrene, expandedpolypropylene and expanded polyethylene.
 8. The portable computingdevice as recited in claim 5, wherein the foam stiffener is machined,molded or die cut to a desired prefabricated geometry.
 9. The portablecomputing device as recited in claim 1, wherein inner surfaces of thehousing have a complex geometry, and wherein the stiffener has an outergeometry that coincides with an inner geometry of at least portions ofthe housing.
 10. The portable computing device as recited in claim 9,wherein the stiffener further includes protrusions and depressions forfilling empty spaces between inner surfaces of the housing.
 11. Theportable computing device as recited in claim 1, wherein the stiffenerfurther includes a stiffener cavity.
 12. The portable computing deviceas recited in claim 11, wherein the stiffener cavity is configured toprovide clearance for functional electronic components of the portablecomputing device.
 13. The portable computing device as recited in claim11, wherein the stiffener cavity is a weight reduction cavity.
 14. Theportable computing device as recited in claim 1, wherein at leastportions of the housing are thin and flexible.
 15. The portablecomputing device as recited in claim 1, wherein the functionalcomponents include an antenna, the antenna being configured to transmitor receive RF signals, the housing being configured to enclose theantenna such that the antenna is entirely contained internal to thehousing and is operable while being internal to the housing withouthaving to extend any portion of the antenna outside the housing.
 16. Theportable computing device as recited in claim 1, wherein the functionalcomponents include at least a flat panel display and wherein the flatpanel display emits light in a forward direction and in a back directionwhen active; and wherein the first member of the housing forms a back ofthe housing and includes a transparent portion through which a portionof the light emitted by said flat panel display in the back direction isable to pass, thereby illuminating the transparent portion when saidflat panel display is active, the stiffener including an opening forallowing light to pass therethrough.
 17. The portable computing deviceas recited in claim 1, wherein the portable computing device is aportable computer including a base and a lid, the lid being coupled tothe base via a hinge, and wherein the housing corresponds to the housingof the lid or the housing of the base.
 18. The portable computing deviceas recited in claim 1, wherein the stiffener is fastened within thehousing via a lip.
 19. The portable computing device as recited in claim1, wherein the stiffener is structurally coupled to at least a portionof the housing via an adhesive.
 20. The portable computing device asrecited in claim 1, wherein portions of the housing and the stiffenerform a laminate structure which provides resistance to point pressureloading.